init

map.h

@@ -0,0 +1,31 @@
+#ifndef __MAP_H__
+#define __MAP_H__
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#define MAP_SMALLKEY_SIZE 32
+
+typedef struct MapSlot {
+	bool empty : 1;
+	bool heap_alloc : 1;
+	char *key;
+	char smallkey[MAP_SMALLKEY_SIZE]; /* reduce unneeded mallocs */
+} MapSlot;
+
+typedef struct Map {
+	size_t len, cap; /* len: used slots; cap: available slots */
+	MapSlot *slots;
+	size_t val_size;
+	void *vals;
+} Map;
+
+void map_init(Map *m, size_t val_size);
+void map_term(Map *m);
+/* returns true if the value was replaced */
+bool map_insert(Map *m, const char *key, const void *val);
+/* Returns true if the key was found, returns false if it wasn't found.
+ * out_val may be set to NULL. */
+bool map_get(Map *m, const char *key, void *out_val);
+
+#endif /* MAP_H */